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Subgenus Eoseristalis (Eristalis Subgenus Eoseristalis)
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Eristalis hirta
Photo#369263
Copyright © 2010
Alice Cavette
Eristalis hirtus -
Eristalis hirta
Fremont, Alameda County, California, USA
January 12, 2009
Chris Thompson: "the Eristalis is probably hirtus Loew".
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Contributed by
Alice Cavette
on 3 February, 2010 - 4:25pm
The feature about concolorous
The feature about concolorous tarsi on the middle leg is now shown to be unreliable , I now think it is E.hirta because the hind metatarsus is not inflated as in E. arbustorum. A feature I discovered in British Hoverflies by Alan E. Stubbs and Steven J. Falk.
…
Bill Dean
, 29 October, 2013 - 11:22pm
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If you look through the right
If you look through the right wing, the basal tarsus on the middle leg is yellow , the apical tarsi brown to black.
Eristalis hirta has all the tarsi the same brown colour.
Probably E.arbustorum but we need to see the face.
…
Bill Dean
, 24 October, 2013 - 7:56pm
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A change of mind
A change of mind. I`m sure this is E.hirta now.
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Bill Dean
, 6 October, 2014 - 4:21am
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Chris Thompson Ided
F. Christian Thompson
Adjunct Scientist (Emeritus)
Department of Entomology
Smithsonian Institution
He identified this. I would want he and Martin Hauser to review this before changing it.
…
Alice Cavette
, 24 October, 2013 - 9:07pm
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I agree with Alice -
Bill Dean, you should take a look at the Manual of Nearctic Diptera
Vol. II, 713
Syrphidae by J.R. Vockeroth and F.C. Thompson [yes, the same F.C. Thompson who gave Alice the ID]
Eristalis (Eoseristalis Kanervo), 741
17 spp.; widespread; Curran 1930a, Telford 1970 (both as part of Eristalis)
Curran, C.H. 1930a. New species of Eristalinae with notes ((Syrphidae, Diptera). Am. Mus. Novit. 411: 1-27.
Telford, H.S. 1970. Eristalis (Diptera: Syrphidae) from America North of Mexico. Ann. ent. Soc. Am. 63: 1201-1210.
…
Hartmut Wisch
, 29 October, 2013 - 7:55pm
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The hind metarsus is not inflated
The hind metatarsus is not inflated which makes me sure this is E. hirta now. The yellow markings do not reach the posterior edge of tergite 2, even at the sides of the abdomen which makes me think this is Eristalis hirta but I`m not sure this is a reliable feature.
…
Bill Dean
, 29 October, 2013 - 10:24pm
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